| 摘要: | 本研究利用膠凝－薄膜生物反應槽系統以處理化糞池出流水，於固定污泥停留時間（Sludge retention time，SRT） 20天及水力停留時間（Hydraulic retention time，HRT）6小時之條件下，以陽離子聚丙烯醯胺膠凝劑之不同加藥量探討膠凝－薄膜生物反應槽處理化糞池出流水之效率。
研究實驗分為四個階段，反應槽有效體積12L，生物薄膜槽持續曝氣，第一階段為馴養污泥，植種後MBR槽中污泥濃度為4000 mg/L。全程實驗控制水力停留時間（Hydraulic retention time，簡稱HRT）6 hr，污泥停留時間（Sludge retention time，簡稱SRT）SRT 20天，實驗中薄膜抽停時間為每抽5分鐘停止1分鐘。第二階段為微生物生長穩定後無添加膠凝劑，第三階段及第四階段添加不同劑量陽離子膠凝劑，陽離子膠凝劑添加劑量的濃度，是以參考應用於本系統之另一研究實驗數據來決定劑量，在第三階段為添加0.1 mg/L陽離子膠凝劑，第四階段為添加2 mg/L陽離子膠凝劑。
本系統之進流水是採用化糞池出流水，其濁度變化起伏大，濁度約為 6.5 - 136 NTU區間；而在放流水方面，濁度為 0.08 - 1.58 NTU區間，濁度去除率可高達98.32%；對TDS去除效率較差，本系統使用的MF薄膜無法有效去除TDS；而TCOD與SCOD的平均去除率，在第三階段及第四階段於薄膜生物反應槽添加膠凝劑後，相較於第二階段的COD去除效率有明顯的增加。
在氮系列物質分析中，發現到有添加膠凝藥劑的第三階段及第四階段之硝酸鹽氮有下降的趨勢；且總和各階段TN的實驗數據來看，可以發現到，增加其膠凝劑在反應槽中之濃度，其TN的去除效率有增加的趨勢，第四階段之總氮平均去除率約為75.19%，最佳去除率為82.90 %；在各階段的氨氮轉換率都在99 % 以上，其次可以明顯的看出加了高分子膠凝劑後，食微比降低，其食微比平均在0.4 Kg NH3/MLVSS．day。
In order to determine the effect of Flocculation on MBR performance of septic tank effluent. The system was operated at sludge retention time 20 days and HRT 6 hours, the cationic polyacrylamide gelling agent of the different dosage of Flocculation - membrane bioreactor treatment efficiency of septic tank effluent.
This experiment is divided into four stages, the effective reactor volume of 12L, bio-film continuous aeration tank, the first stage of domestication and early for the sludge, after the MBR plant species tank sludge concentration 4000 mg / L. Experimental control of the whole hydraulic retention time 6 hr, SRT 20 days, experimental films pumping stop time for 5 minutes per 1 minute. Stages described as follows:
The second stage is to add microbial growth and stability of no gelling agent, the third stage and fourth stage of adding different doses of CAPM. The gelling agent additive amount of cationic concentration, is a reference for the study of this system to another experiment data to determine the dose. In the third stage to add 0.1 mg / L CPAM, the fourth stage, add 2 mg / L CPAM.
From the data obtained in analysis experiments, The results showed that he turbidity of were about 6.5-136 NTU. Of the turbidity, the effluent of the system, range was 0.08-1.58 NTU, t it can achieve turbidity reduction by 98.32%. The system cannot effectively use the MF membrane to remove of TDS. it can achieve TCOD and SCOD by removal rate, the stage of third and fourth, in film to add bio-reactor C-PAM, compared with the second stage of the COD removal efficiency increased significantly.
About the nitrification, we found that adding C-PAM and fourth stages of the third of a downward trend in nitrate. and look of the TN data, we can find to their C-PAM concentration was increase in the MBR, the TN removal efficiency of the increase. And the fourth stage of the average TN removal rate of about 75.19%, the best removal rate was 82.90%
In various stages of conversion rate of ammonia are more than 99%, followed by can see the obvious increase of the C-PAM agent, the water ratio for
lower than average in their food micro 0.4 Kg NH3/MLVSS day. |
